Suscetibilidade De Amostras De Escherichia Coli De Origem Aviária a Antimicrobianos

Zanatta, G.F.; Kanashiro, A.M.I.; Castro, A.G.M.; Cardoso, A.L.S.P.; Tessari, E.N.C.; Pulici, S.C.P.

doi:10.1590/1808-1657v71p2832004

Arq. Inst. Biol.

2004

DOI: 10.1590/1808-1657v71p2832004

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Suscetibilidade De Amostras De Escherichia Coli De Origem Aviária a Antimicrobianos

G.F. Zanatta,

A.M.I. Kanashiro,

A.G.M. Castro

et al.

Abstract: RESUMO O presente trabalho teve como objetivo verificar a suscetibilidade de cepas de Escherichia coli de origem aviária, a algumas drogas antimicrobianas de uso veterinário e/ou humano. Foram analisadas 120 amostras isoladas de aves comerciais necropsiadas no Laboratório de Descalvado. Foram testadas 10 drogas antimicrobianas. A tetraciclina foi a droga para a qual se verificou maior resistência (76% das amostras resistentes). A droga mais eficiente foi a fosfomicina (91,3% de amostras sensíveis). Apenas 7 am… Show more

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Cited by 2 publications

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Diversity of Escherichia coli strains involved in vertebral osteomyelitis and arthritis in broilers in Brazil

et al. 2016

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BackgroundLocomotor disorders and infections by Escherichia coli represent major concerns to the poultry industry worldwide. Avian pathogenic E. coli (APEC) is associated with extraintestinal infections leading to respiratory or systemic disease known as colibacillosis. The most common lesions seen in cases of colibacillosis are perihepatitis, airsacculitis, pericarditis, peritonitis/salpingitis and arthritis. These diseases are responsible for significant economic losses in the poultry industry worldwide. E. coli has been recently isolated from vertebral osteomyelitis cases in Brazil and there are no data on molecular and phenotypic characteristics of E. coli strains isolated from lesions in the locomotor system of broilers. This raised the question whether specific E. coli strains could be responsible for bone lesions in broilers. The aim of this study was to assess these characteristics of E. coli strains isolated from broilers presenting vertebral osteomyelitis and arthritis in Brazil.ResultsFifteen E. coli strains from bone lesions were submitted to APEC diagnosis and setting of ECOR phylogenic group, O serogroup, flagella type, virulence genes content, genetic patterns by Pulsed Field Gel Electrophoresis (PFGE) and Multilocus Sequence Typing (MLST). In addition, bacterial isolates were further characterized through a lethality test, serum resistance test and antibiotic resistance profile. E. coli strains harbored different genetic pattern as assessed by PFGE, regardless of flock origin and lesion site. The strains belonged to seven sequence types (STs) previously described (ST117, ST101, ST131, ST 371 and ST3107) or newly described in this study (ST5766 and ST5856). ECOR group D (66.7 %) was the most frequently detected. The strains belonged to diverse serogroups (O88, O25, O12, and O45), some of worldwide importance. The antibiotic resistance profile confirmed strains’ diversity and revealed a high proportion of multidrug-resistant strains (73 %), mainly to quinolones and beta-lactams, including third generation cephalosporin. The percentage of resistance to tetracycline was moderate (33 %) but always associated with multidrug resistance.ConclusionsOur results demonstrated that vertebral osteomyelitis and arthritis in broilers can be associated with highly diverse E. coli based on molecular and phenotypic characteristics. There was no specific virulence patterns of the E. coli strains associated with vertebral osteomyelitis or arthritis. Also, E. coli strains were frequently multidrug resistant and belonged to STs commonly shared by APEC and human ExPEC strains.Electronic supplementary materialThe online version of this article (doi:10.1186/s12917-016-0762-0) contains supplementary material, which is available to authorized users.

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Diversity of Escherichia coli strains involved in vertebral osteomyelitis and arthritis in broilers in Brazil

et al. 2016

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Susceptibilidade Antimicrobiana De Amostras De Escherichia Coli Isoladas De Frango Industrial (Gallus Gallus Domesticus - Linnaeus, 1758) Com Colibacilose

Marietto-Gonçalves

Filho

2010

Arq. Inst. Biol.

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RESUMO O presente estudo avaliou a susceptibilidade de amostras de Escherichia coli isoladas de quadros de colissepticemia aviária da região centro-oeste paulista pelo Laboratório de Ornitopatologia da FMVZ-UNESP/Botucatu, SP. Constatou-se um grande número de amostras multirresistentes aos antibióticos testados, onde as drogas menos efetivas foram sulfonamida e tetraciclina. Todas as amostras mostraram-se sensíveis a norfloxacina e gentamicina.

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Suscetibilidade De Amostras De Escherichia Coli De Origem Aviária a Antimicrobianos

Cited by 2 publications

References 13 publications

Diversity of Escherichia coli strains involved in vertebral osteomyelitis and arthritis in broilers in Brazil

Diversity of Escherichia coli strains involved in vertebral osteomyelitis and arthritis in broilers in Brazil

Susceptibilidade Antimicrobiana De Amostras De Escherichia Coli Isoladas De Frango Industrial (Gallus Gallus Domesticus - Linnaeus, 1758) Com Colibacilose

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